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A dairy needs 244 gallons of milk containing 7% butterfat. How many gallons each of milk containing 9% butterfat and milk containing 1% butterfat must be used to obtain the desired 244 gallons?

 May 3, 2022
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Let x gallons be the amount of milk containing 9% butterfat and y gallons be that of milk containing 1% butterfat.

 

We have \(\begin{cases}x + y = 244\\(9\%)x + (1\%)y = (7\%)(244)\end{cases}\) by considering the total amount of milk and the total amount of butterfat respectively.

 

Can you continue solving for x and y from here?

 May 3, 2022

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